wip

src/Avalonia.DesignerSupport/Remote/RemoteDesignerEntryPoint.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Net;
 using System.Reflection;
 using System.Threading;
@@ -8,6 +9,7 @@ using Avalonia.DesignerSupport.Remote.HtmlTransport;
 using Avalonia.Remote.Protocol;
 using Avalonia.Remote.Protocol.Designer;
 using Avalonia.Remote.Protocol.Viewport;
+using Avalonia.Styling;
 using Avalonia.Threading;
 
 namespace Avalonia.DesignerSupport.Remote
@@ -219,6 +221,14 @@ namespace Avalonia.DesignerSupport.Remote
                 s_viewportAllocatedMessage = viewport;
                 RebuildPreFlight();
             }
+            if(arg is ThemeVariantListRequestMessage)
+            {
+                var variants = Application.Current?.Styles.Select(x => (x as Styles)?.Resources.ThemeDictionaries.Keys.ToString())?.ToArray();
+                s_transport.Send(new ThemeVariantListResponseMessage()
+                {
+                    ThemeVariants = variants
+                });
+            }
             if (arg is UpdateXamlMessage xaml)
             {
                 if (s_currentWindow is not null)

src/Avalonia.Remote.Protocol/DesignMessages.cs

@@ -26,6 +26,17 @@ namespace Avalonia.Remote.Protocol.Designer
     {
         public string SessionId { get; set; }
     }
+
+    [AvaloniaRemoteMessageGuid("F196DC31-43DF-4BEB-A56D-129E64454377")]
+    public class ThemeVariantListRequestMessage
+    {
+    }
+
+    [AvaloniaRemoteMessageGuid("1AA06D40-F65A-4916-85F1-4CF5681781E8")]
+    public class ThemeVariantListResponseMessage
+    {
+        public string[] ThemeVariants { get; set; }
+    }
     
     public class ExceptionDetails
     {